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        <article data-uid="Sample.Disp.DemoPickable">



  <h1 id="Sample_Disp_DemoPickable" data-uid="Sample.Disp.DemoPickable" class="text-break">
Class DemoPickable  
  </h1>

  <div class="facts text-secondary">
    <dl><dt>Namespace</dt><dd><a class="xref" href="Sample.html">Sample</a>.<a class="xref" href="Sample.Disp.html">Disp</a></dd></dl>
  <dl><dt>Assembly</dt><dd>Hi.Sample.Wpf.dll</dd></dl>
  </div>

  <div class="markdown summary"><p>Demonstrates creation of pickable 3D geometry at the primitive level.
Shows how to assign picking IDs directly to geometry vertices and create interactive triangles.
Uses a lower-level approach than the Pickable base class for more precise control.</p>
</div>
  <div class="markdown conceptual"></div>

  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public class DemoPickable : IDisplayee, IExpandToBox3d</code></pre>
  </div>




  <dl class="typelist inheritance">
    <dt>Inheritance</dt>
    <dd>
      <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></div>
      <div><span class="xref">DemoPickable</span></div>
    </dd>
  </dl>

  <dl class="typelist implements">
    <dt>Implements</dt>
    <dd>
      <div><a class="xref" href="../../api/Hi.Disp.IDisplayee.html">IDisplayee</a></div>
      <div><a class="xref" href="../../api/Hi.Geom.IExpandToBox3d.html">IExpandToBox3d</a></div>
    </dd>
  </dl>


  <dl class="typelist inheritedMembers">
    <dt>Inherited Members</dt>
    <dd>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object)">object.Equals(object)</a>
    </div>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object-system-object)">object.Equals(object, object)</a>
    </div>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.gethashcode">object.GetHashCode()</a>
    </div>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.gettype">object.GetType()</a>
    </div>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.memberwiseclone">object.MemberwiseClone()</a>
    </div>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.referenceequals">object.ReferenceEquals(object, object)</a>
    </div>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.tostring">object.ToString()</a>
    </div>
  </dd></dl>




  <h2 id="Sample_Disp_DemoPickable_remarks">Remarks</h2>
  <div class="markdown level0 remarks"><h3 id="source-code">Source Code</h3>
<pre><code class="lang-csharp" name="SampleCode">using Hi.Disp;
using Hi.Geom;
using System;

namespace Sample.Disp
{
    /// &lt;summary&gt;
    /// Demonstrates creation of pickable 3D geometry at the primitive level.
    /// Shows how to assign picking IDs directly to geometry vertices and create interactive triangles.
    /// Uses a lower-level approach than the Pickable base class for more precise control.
    /// &lt;/summary&gt;
    /// &lt;remarks&gt;
    /// ### Source Code
    /// [!code-csharp[SampleCode](~/../Hi.Sample.Wpf/Disp/DemoPickable.cs)]
    /// &lt;/remarks&gt;
    public class DemoPickable : IDisplayee
    {
        private readonly Drawing draw;
        private readonly ShowEventPickable pickable;

        /// &lt;summary&gt;
        /// Initializes a new instance of DemoPickable.
        /// Creates a pickable triangle with a specific picking ID for user interaction.
        /// &lt;/summary&gt;
        public DemoPickable()
        {
            pickable = new ShowEventPickable();
            double pid = pickable.PickingID;
            double[] vs = new double[] {
                //pickID, x,y,z
                pid, 0,0.1,0.1,
                pid, 0.1,0,0,
                pid, 0.1,0,0.1
            };
            draw = new Drawing(vs, Stamp.PV, GL.GL_TRIANGLES);
        }
        /// &lt;inheritdoc/&gt;
        public void Display(Bind bind)
        {
            draw.Display(bind);
        }
        /// &lt;inheritdoc/&gt;
        public void ExpandToBox3d(Box3d dst)
        {
            draw.ExpandToBox3d(dst);
        }

        /// &lt;summary&gt;
        /// Entry point for the DemoPickable example.
        /// Creates and displays a pickable triangle that can respond to mouse events.
        /// Demonstrates integration of picking functionality with geometric primitives.
        /// &lt;/summary&gt;
        [STAThread]
        public static void Main()
        {
            DemoUtil.RunApplication(&quot;DemoPickable&quot;, new DemoPickable());
        }
    }


}
</code></pre></div>


  <h2 class="section" id="constructors">Constructors
</h2>


  <a id="Sample_Disp_DemoPickable__ctor_" data-uid="Sample.Disp.DemoPickable.#ctor*"></a>

  <h3 id="Sample_Disp_DemoPickable__ctor" data-uid="Sample.Disp.DemoPickable.#ctor">
  DemoPickable()
  
  </h3>

  <div class="markdown level1 summary"><p>Initializes a new instance of DemoPickable.
Creates a pickable triangle with a specific picking ID for user interaction.</p>
</div>
  <div class="markdown level1 conceptual"></div>

  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public DemoPickable()</code></pre>
  </div>













  <h2 class="section" id="methods">Methods
</h2>


  <a id="Sample_Disp_DemoPickable_Display_" data-uid="Sample.Disp.DemoPickable.Display*"></a>

  <h3 id="Sample_Disp_DemoPickable_Display_Hi_Disp_Bind_" data-uid="Sample.Disp.DemoPickable.Display(Hi.Disp.Bind)">
  Display(Bind)
  
  </h3>

  <div class="markdown level1 summary"><p>Display function called in <a class="xref" href="../../api/Hi.Disp.DispEngine.html">DispEngine</a> rendering loop.</p>
</div>
  <div class="markdown level1 conceptual"></div>

  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public void Display(Bind bind)</code></pre>
  </div>

  <h4 class="section">Parameters</h4>
  <dl class="parameters">
    <dt><code>bind</code> <a class="xref" href="../../api/Hi.Disp.Bind.html">Bind</a></dt>
    <dd><p>Bind with <a class="xref" href="../../api/Hi.Disp.DispEngine.html">DispEngine</a>. See <a class="xref" href="../../api/Hi.Disp.Bind.html">Bind</a>.</p>
</dd>
  </dl>












  <a id="Sample_Disp_DemoPickable_ExpandToBox3d_" data-uid="Sample.Disp.DemoPickable.ExpandToBox3d*"></a>

  <h3 id="Sample_Disp_DemoPickable_ExpandToBox3d_Hi_Geom_Box3d_" data-uid="Sample.Disp.DemoPickable.ExpandToBox3d(Hi.Geom.Box3d)">
  ExpandToBox3d(Box3d)
  
  </h3>

  <div class="markdown level1 summary"><p>Expands the destination box.
This function is usually used to compute the bounding box of elements.</p>
</div>
  <div class="markdown level1 conceptual"></div>

  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public void ExpandToBox3d(Box3d dst)</code></pre>
  </div>

  <h4 class="section">Parameters</h4>
  <dl class="parameters">
    <dt><code>dst</code> <a class="xref" href="../../api/Hi.Geom.Box3d.html">Box3d</a></dt>
    <dd><p>Destination box</p>
</dd>
  </dl>












  <a id="Sample_Disp_DemoPickable_Main_" data-uid="Sample.Disp.DemoPickable.Main*"></a>

  <h3 id="Sample_Disp_DemoPickable_Main" data-uid="Sample.Disp.DemoPickable.Main">
  Main()
  
  </h3>

  <div class="markdown level1 summary"><p>Entry point for the DemoPickable example.
Creates and displays a pickable triangle that can respond to mouse events.
Demonstrates integration of picking functionality with geometric primitives.</p>
</div>
  <div class="markdown level1 conceptual"></div>

  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">[STAThread]
public static void Main()</code></pre>
  </div>














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